Agricultural machine



L. 'c. HEST'ER 1,774,008

AGRI CULTURAL MACHlNE Filed Nov. 3, 1927 sheets-sheez 1 Allg. 26,1930.

INVENTOR .Cuvese' ATTORNEY l Aug. 26, 1930. L, C. HESTER 1,774,008

AGRICULTURAL MACHINE Filed Nov. 3. 192'? 5 sheets-Sheet 2 ATTQRNEY Aug.26, 1930. L. c. HESTER AGRICULTURAL MACHINE l Filed Nov. 5. 1927 5Sheets-Sheet 3 v mvx-:NToR

6l/L' C. eSe/f ATTORNEY Aug. 26, 1930. L. c. HESTER v 1,774,008

I AGRICULTURAL MACHINE l Filed Nov. 3, 1927 5 Sheets-Sheep* 4 l INVENTOR24" @l day 7" ,Len/z; (1f/es 1v l, 6:2] BY ATTORNEY Aug. 26, 1930. c.HEsTER AGRICULTURAL MACHl-NE Filed Nov. s, 1927 5 Sheets-Sheet 5' il@ATTORNEY j Patented Aug.` 26, 1930 LEVI c. BESTER, or',mcKsoNvILLn,FLORIDA` AGRICULTURAL MACHINE .Application edNoyemberS, 1927. Serial No.230,844. y

This invention relates toV improvements in agricultural machinesgenerally, and more particularly to vtractor vdriven typesof suchmachines. c y y l 5 The principal object ofthe invention is to providefor a machine of the class set forth,

and one of acomparatively simple but durable and efficient constructionand arrangement of parts, and whichpis especially de- 'lO signed foreither rightor left hand plow-k ing operations, such as will make it,eX-

' tremely valuable for use in orchards or other kindred soilconditioning operations', as well as for soil bedding and ter-racingoperations.

Another object of the inventionisto provide for a plow structure of a,nature to be readily and easily attached to tractors of various makes,and generally the point of attachment or connection is yeffectedvdirectly 550 at the rear ends only of the plow and tractor, so that thefull power of the latter and itsrlive weight is applied to the rear endor i ends only of the beam or beams of the plow. l l y tion, of aconventional form of tractor, show- A further vobject of the inventionis to provide/for aplow attachmentfor tractors as hereinbeforementioned, and one wherein f the plowA beam or beams is fullrfloatingfor- Wardly vof its point ofattachment or cony n plan view thereof,

nection withr the tractor andare soarranged yand supported in position'Vthat practically all side draft effects on the same andthe plow bladescarried thereby rare eliminated.

jA A still further object ofthe invention is;

' to provide for a plow attachmentof the character mentioned, and onewherein bothfdiscs y and mouldnboard types of plow blades are y'detailtakenon the line 5--5 of Figure 4,

to* be interchangeably employed with the same, and the mountings for theblades arearranged to permit changing of the positions 40 of operationsof the;` blades, sothat they may be used for ordinary soilconditioningpurposeV from either thev rightor left hand ^side of thetractor or for shaping ythe plowed and conditioned soil into ybeds orterraces. y

Anotherobject ofthe invention isto provide for a plow of the type setforth, and one of a nature adapting the same for-operative installationdirectly beneath those types of tractorsY which have a sufficientclearance beneath the samelfor the purpose, so that the A further objectof the invention is to proy vide for a plow attachment of the type. as i-hereinbefore characterized, andone embodyn ing a simple but eflicientmeans forlifting andflowering the plow from andy to its Soilconditioning position of operation, yas well as to varyjor otherwiseregulate .working depth or penetration of the plow blades when inlowered position, which means is preferably operable `by the power ofthe tractor through a suitable mechanism under the con-v, trol oftheoperator of the tractor. y l

With the foregoing and equally important objects in view,"the inventionresides ,in the certain new anduseful combination, construction andarrangement of parts as" vwill be hereinafter more fully described, lsetforth in the appended claims, and illustrated in the accompanyingdrawingsin which:-y

Figure l isa sideelevation partly in sec- Figure?) is a` top'plan viewof the plow hattachment per se, with parts of its connecvtionv with thetractor shown' in crosssection,

" Figure 4 is a fragmentary side eleyation of the plowk attachment and,its associated parts as it appears inFigure `3,

Figure 5 1san enlarged transversesectional Figure 6 is arverticaltransverseksection Vtaken on they liney 6%6 of Figure 1, v o Figure 7 isa vertical transverse section taken on the line 7-l7of Figure 4, ,n

Figure 8 is an enlarged fragmentary side elevation of the powertransmitting mechanism fori operating'the plow lifter land regulatingmeans,r l v Figure 9 1s an enlarged perspectiveview PATENT (OFFICE.

of the bracket or mounting for the car driven 'bull wheel yand theassociated parts and thev power transmitting mechanism,

Figure 10 is a fragmentary side elevation kof the tractor and the plowattachment, the

latter being shown with a mould-board type of plow blade as appliedthereto, and

Figure l1 is a fragmentary top plan View of the tractor and plow as theyappear in Figure 10. Referring to the drawings wherein similarcharacters of reference designate corre-V sponding parts throughout theseveral views thereof,iA indicates generally a conventional Vform'offarm tractor and a isthe usual,

draw bar carriedat thecenter of the rear end of the saine.

The plow attachment in accordance with the present invention comprises apair of beams preferably of bar iron and shaped to Y provide rearwardlydirected shortand substantially parallel end portions and 2l and longer`forwardly directed and divergent end portions 20 and 2l. The extremerear ends of the parallel end portions 2G and 21 are apertured forkpivotal connection on a pivotmember or bolt 22, to either side of aspacing member or sleeve 23. The opposite ends of the pivot member 22are supported in brackets 24 which are formed of suitable .lengths ofangle iron. These brackets 24; are bolted at their upper ends and inproperly Vspaced relation to the forward side of the depending flange2.5 of an auxiliary or supplemcntal draw bar 26. The projecting parallelBanged portionslof the brackets 2i are provided with vertically spacedand complemental aligned apertures 24 for the adjustable arrangementthereinof the pivot member 22. y The supplemental draw bar 26 is fthebracketsmay be adjustably secured in 4positionthereon as occasion'mayrequire.

In the disc type of plow as shown in Figuresl tol 9 angle brackets 27are secured in spaced relation along the outer sides of the forwardlydivergent end portions 2,0 and 21 of theplow beams, by means offastenings 28. These fastenings 28 are preferably in the formr of U'bolts arranged to have their looped ends engaged' over the angularattaching portions of the brackets 27, so that the 'latter maybevadjusted` as desired without requiring the removalv of the bolts orthe brackets from their yengagement with the beamst For ordinary rightand left hand plowing operations the brackets 27 are placed at the outersides of the beams`20 and 2l as @own in fullv linesn. 'Figures 1 2 .3.,e and 6, but for bedding or terracing the plowed soil the severalbrackets 27 will be removed and a substitute angular bracket 27 will besimilarly secured at the inner side of each of the beams and at pointsadjacent the extreme forward ends thereof substantially as is shown inbroken lines in Figure In either case, the brackets 27 and 27 will beprovided with forwardly directed spindles 29 on which are mounted discplow blades For changing or sustaining the plow beams 20 and 2l in anyof their operative positions to allow for their independent orsimultaneous vertical adjustments a pair of oppositely disposed membersor arms 30 and 3l are provided andthe outer ends of the same are bentinto parallel relation with respect to the inner complementary sides ofthe beam portions 20 and 2l to form attaching portions and 3lrespectively, which attaching portions are hingedly engaged in membersor bearings 32 and 32 moulded in position on the beam portions 20 and 2lfor the purpose. Similarly the inner end portions 80 and 3l areangularly bent into parallel relation one with respect to the other toform attaching portions hingedly engaged in eyes or the like 83 formedat their lower ends with a pair of downwardly converging bracket arms 33which, in turn have their upper ends angularly bent, as at 33's', andapertured for secured engagement on fastenings or bolts .34; supportedin the oppositely disposed side bars of the frame of the tractor.

Straddling the power plant of the tractor at a point intermediate itsopposite ends is an inverted substantially U-shaped member or bracket 35upon which is supported the lifter mechanism for the plow beams 20 and2l which mechanism isto be hereinafter fully described. The lower endportions of the opposite legs of the member or bracket 35 are intnrned,as at 35', and these inturned portions are -apertured for securedengagement with the upper ends of the fastenings Se as aforesaid.Journaled in the upper connected ends of the opposite legs of the memberor bracket 35 is a transversely extending shaft 36 which has itsopposite ends projecting beyond the outer faces of the bracket legs toreceive thereon a. pair of complementary arms 37 and 38, to the outerends of which are attached the upper ends of a pair of flexiblesuspension members, such as chains 39. The lower ends of such chains 39are connected indirectly to the plow beams 2O and 21, whereby to operateto lift and lower the beams accordingly with reversed directional.movements of the arms 37 and 38 and the shaft 36, These arms .37 and 3.8are aligned on the shaft 36 so that the operative movement of the sameand the chain 39will be uniform. its shown, .the lower ends of the chain39 are attached to eye bolts or the like i0 carried by the free endportions of the angularly disposed outer endsB and 31 of thehingedmernbers 30 and 31. Secured to the end ofthe shaft 36, V'outwardlyof 'thek the free end of the longer arm 41 on the shaft 36 and has itsother end attached to awinding shaft 43 which is journaled'in bearingbrackets 44. As shown Vin Figure 9, this bearing bracket 44 ispreferably in the form of a casting 'shaped'to provide a transverseportion'45 at the upper side of which is provided an angularly extendingarm 46 disposed in spaced parallel relation to an ear or lug` 47. Thearm 46 and the ear orlug 47 are apertured as at 46 and 47 respectively,to journal in the same the winding shaft-43 aforesaid. Projecting fromthe under side of the transverse portion are'a'pair of spaced ears -orlugs 48 which are complement-ally aperturfed for'engagement on afpivotmember or support- 49. A hand lever `50 is attached tothe arm 45 ofthepivoted 'bracket 44 and eX- Vtends therefrom' tol a point convenient tothe position of theoperator of the tractor. One

V'end of the winding shaft 43 projects koutward- -1 ly of the arm 46, ofthe bracket 44, and has keyed thereon abull wheel 51, which, when theYbracket 44 isi swung "backwardly on its pivotal support 49 by adownward pressure on the hand lever 50, is arranged'to have itsperiphery frictionally engaged with they periphery of av power take-oftldisc or wheel 52 keyed von a-shaft 53 which is driven from the owerplant' in the tractor in usual manner.

,'Tliebull wheel 51`i's',fh`owever, normally sus-y tained out ofengagement with the take-off 52 by means of a' tension device 54, whichis preferably inthe form of a coiledspring as shown in Figurev 8.'rThisspring 54 has one end conneetedtothe bracket 44 'pii otal support'49thereof, and its upper end to the adjacent side bar ofthe frame ofthetractor. n spring 54 tensionsthe bracket'44gin a forward directionon'the pivotal support'49 in av When` normally positioned the mannerthat the bull wheel 51p'A is heldxfree Vfrom engagement with thetake-off 52. (.Se-

cured tothe tractor at one sideof thebull wheel 51 ports a brake shoe56Vin position to beengaged by the periphery of the bull wheel 51y whenthe latter is sustained by the spring 54 out ofoperative engagement withthe power take-off 52. Y i

`llVhen it is desired to Valternate the plowing' operations from oneside'or the other of in lifted position,

at a point above the' is a member or arm 55 which'supr "the tractor, theplow beam at the side thereof opposite t-o the beam in use isto besustained and'forthis purpose a supporting member or bolt 57 is slidablymount- 'ed in a member or.sleeve58,which is carried at the lower endof'a bracket. 59' depending Afrom a cross bar 60 extendingl transverselybetween-the opposite side'bars of thetractor iframe as is clearlyillustrated in Figure 5. :This member or bolt 57 is arranged to havefone or the other of its opposite ends'projected outwardly of the endsof the member lor sleeve 58 and beneath an elevated plow beam.

lForv manipulating the slidebolt or member 57 61 is extended from apoint an actuating lever adjacent the operators position on the tractorand connects the member 57 `atfits center, a slot 62 being formedlongitudinallyof the member or.V sleeve 53 to permit vof thisarrangement and to allow for desired movel f ments of the hand lever forthe proper actuaation of the member or bolt. As shown the lever 61 isfulcrumed at an intermediate point as at 63 to afiXed part of thetract-or to facili-l tate its operation. By centering the sliding memberor bolt 57 in the supporting sleeve 58 when both of the plow beams 20and21 are in raised position, the latter may be simultaneously supported insuChposition on the opposite ends of the member or bolt57 as 'willbe'obvious. l

. Referring.l now to the4 slightly modified` form of the invention asshown in Figures 10 and 11, it will be seen that two of the plowbeams20a should be employed and are necessarily of a different shapefrom that of the beams 20 and 21, whereby to adapt the same for theattachment thereto of the mouldboard type of blades. v In this instance,each beam 20a constitutes a' rearwardly directed straightend portionwhich is angularly connected to a forwardly directed and substantiallyvstraight end portion 2()b by an intermediate' curved portion 20c. Theextreme rear end of the rearwardly directed portion lof the beam 2Oaislpivotally engaged tothe pivot pin or bolt 20 ofthe brackets 24in theusual manner, exceptthat a pair' of thesel brackets 24 are employed to'secure each'of the oppositelyvdisposed plowrbeams 2Oa to i the angulardraw bar 25, vand'that the points of connection of the same to thelatter are toward'the outer opposite ends thereof asis distinguishedfrom the central point of connection of the said brackets 24with theauxiliary drawbar 25, as in the first instanceof the invention- Theangular disposition of the rearward and forward directed portions of theplow beams 20a disposes the latter yportion at av greater height fromthe ground surface'to provide sufficient clearance for' the properoperative movement of the plow blade. f

' To eEec-t anvetlicient attachment of they mould-board plow*Vv blade tothe plow beam and downwardly directed end portion 2Oe which carriesatits free .end apivot 64 disposed in engagement with the lower portionof the plow blade 65. The forward end of this carrier beam 2Obterminates in a plane below and slightly forward of the upwardly curvedintermediate portion c of the main plow beam 20a so that the plow blade65 is ysupported at the point of greater clearance .below the latter andsubstantially in the plane of the transverse center of the tractor.

` From this arrangement, it will be seen that beam 20d.

, ystance of the invention.

the plow blades 65, at the opposite sides of the tractor are operativelydisposed at points substantially mid-way between the adjacent and frontand rearfground wheels of the tractor. Y

To maintain the plow blade in proper flat or horizontal working positionand to automatically return the same to such position from tiltedpositions for penetration into or withdrawal from thesoil, as the easemay be, a vertically disposed` 4controlled member 66 is provided and thesame is preferably in the form of a Vbar or rod having itsV lower endpivotally connected as at 67 to the inner side of the plow blade 65 at apoint substantially central of the latter and above and rearwardly ofthe point of pivotal connection 64 between the blade 65 and the carrierThe upper end of this controlled member 65 is passed upwardly through aneye bolt or the like 68 which is adjustably secured in a supporting bar69 bolted in horizontal position to and rearwardly of the bracket 35.This supporting bar 69 is formed to provide for a plurality ofhorizontally spaced apertures 70 for the adjustment of the eye bolt' 68as aforesaid. The upperl end portion of the controlling bar 66, at andabove its point of lengagement', with the eye bolt 68 isvangularly bentas at 71 whereby to co-operate with the'eye bolt in returning the plowblade 65 to its normal horizontal working position after each loweringoperation of the lifter mechanism. As shown, the plow beams 20a areindirectly connected to the lifting elements or chains 39 after themanner of the plow beams 2O and 21 asin the first in- `To stabilizeandotherwise support the forward ends of the plow beam 2Oa the forwardends of the same are each provided with an angnlarly disposed bearingmember 72 in which i s journaled a spindle 73 rising from an enlargedend portionf74 of an angularly disposed arm 75. This arm 75 is pivotallydirected rearwardly from the spindle 73 and vhas journaled in its free'end the stub shaft or spindle 76 of a ground wheel 77.

In the operation of either form of the plow attachment as thusconstructed, arranged and attached to a tractor, and for moving the plowand tractor from one point of use to another, both of the plow beams,will be supported in raised position on the sliding member or bolt 57,as hereinbefore explained. New should it be desired to start a plowingoperation, and to condition the soil at the right hand side of thetractor, the operator will shift the sliding member or bolt 57 furtherto the left hand side, which will allow the right hand plow beam to belowered, so that the disc blades 29 on the one hand, or the mould-boardtype of plow blade 65 on the other hand, to penetrate the soil to beplowed. To ed-ect the lowering of the plow beams to be used, either whenusing them simultaneously or separately, a slight downward pressure ofthe hand lever 5() will 4ease up on the lbrake shoe 55 in a manner topermit of the free rotation of the bull wheel 51, and consequently anunwinding of the flexible element or chain l1 from the winding shaft l2Vby the gravitation of the plow beams when the mechanism is so released.Similarly, when it is desired to plow from the left hand side of thetractor, the left han-d plow beam may be lowered in the same manner bythe operator shifting hand lever 61 and the sliding member or bolt 57 tothe right for the purpose. From the foregoing it will be readily obviousthat, a piece of ground may be properly plowed, with the soil throwneither to the right hand or left hand side of the tractor, in onecontinuous movement of the tractor` from one side of the piece of landto the other, and by making the turning points of thetractor to coincidewith the direction 0f throwA of soil from the plow blade.

As has been hereinbefore suggested bedding and terracing operations maybe performed by these plow attachments, and more particularly with thedisc type of such attachment, by removing from the outer oppositesidesof the pairs of plow beams the gangs of plow blades and their mountings,and then substituting for the same a single plow blade and mounting atthe inner side of each of the forwardly directed end portions of thebeams after the manner as is shown in broken lines in Figure 3. By thisangular disposition of the two plow blades the same will dispose theplowed soil toward each other in a manner to bed or terrace the soilbetween the same, and in line with the longitudinal center of thetractor in its forward direction of travel.

Without further description, it is thought that the features andadvantages of the invention will be readily apparent to those skilled inthe art, and it will of course be understood that changes in the form,proportion and minor details of 'construction may be resorted to,withouty departing from i the spirit of theinvention vor its scope asclaimed. 4

vWhat is claimed is n 1.'. In combination, a tractorfincluding a maindraw bar at ,the rear end thereof, an auxiliary draw barVv .carriedatits center by the kmain draw barandv plow attachment dis# posedbeneath the tractorand operatively and adjustablyV connected at theirrear ends tothe opposites of the said auxiliary draw4 bar; .A i" 2, Incombination, atractor includingV a main draw bar at the rearl endthereof,an auxiliary draw bar carried at its center by the main drawbar, and oppositely,disposedv and forwardly directed plow beams adapted.

to be disposed beneathvthe tractor. and operatively and adjustablyconnected at their 'f rear ends to the opposite sides of said auxiliarydrawbar. n i y j 1 3. In combination', a tractor including va7` maindraw'barY at lthe .rear end thereof,`a transversely extending auxiliaryyudraw v bar carried at its centerby said main draw b ar, oppositelydisposed and :forwardly directed plow beams adapted tobe 'disposedbeneath the tractor, pivot meansconnecting the rear.

v ends of said plow beams to the opposite ends of said auxiliary drawbar and a plurality of plow blades carried by eachA of said plow, beams.

LIIn combination, atractor includinga main ydraw bar at the rear endthereof, a

' transversely extending auxiliary-draw bar carried by. said main drawbar, oppositely disposed and fowardly directed plowbeams disposedbeneath the tractor, adjustablepivot means connecting the rear ends ofsaid plow. beams tosaid auxiliary draw bar, aplurality of plow bladescarried byeach offsaid plow beams, and,y means foracontrollingfthe for`Y ward portions of said plow beamstorestrain the same from lateral andverticaly move# ments. y n` v5. In combination, a .tractor ,including amain draw bar at the rear end thereof, a transversely extendingauxiliary drawfbar carried by' saidmain draw. bar, oppositely disposedand forwardly directedplow beams disposed beneath the tractor,"`vertically adjustable pivot means connecting. the rear ends of said plowbeams vtofsaidv auxiliary drawlbar, plowvbladesvcarried by. said plowbeams, and means for, controlling thexfor-l ward portions of said plowlbeams to restrain the same from lateral and f vertical movements. `v 6.In combinatioma tractor including a main drawl bar at the* rear endthereof, a transversely extending auxiliaryy draw vbar carried by saidmain draw bar, oppositely disposed and forwardly' directed plow beamsdisposed beneath vthe* tractor, vertically adjustable pivot meansvconnecting the rear ends of said plow beams to said auxiliary Yments".c .Y Y-

.8. cIn combination, yatractor includinga draw bar, plow bladescarriedbysaid plow beams, and means for controlling the'for:l

yward end portions of'said plow beamsto'prestrainthe same lfrom lateraland vertical i i y i ,s s, .70

move1ne'rrts-1'l'` n 1 i y 7. In combination, a tractor including famain draw barfat';the rear. end thereof, a

transversely kexdzendingy auxiliary draw bar carried `by the 'main drawbar and commonly connected therewith to the tractor, opposite-A cf' saidplow beams' to said auxiliary draw bar, Vmeans for adjustingsaidpivotmeans vertically of said auxiliary draw bar, a'plurality ofplowblades carried jby said plow beams, andV means forcontrollingtheforward ends of said plow beams to restrain the same'fromlateral and vertical Vmover,

mainy draw bar at therearendthereof,y a

Y ly disposediplow beams disposedbeneath'thet f tractor, pivot meansconnecting the rear ends sal transversely extendingI auxiliarydraw barcarried byr the main draw bar, and commonly Vconnected therewith to thetractor, -'opp'ositely Ydisposed plowjbeams adaptedto be v disposedbeneath -the tractorfpivot means connecting the rearfends offsaid plowbeamsy andsaid auxiliary drawbar, means forl ad. justing said vpivot vmeans; vertically and longitudinally of said auxiliary: drawbar,

and a plow blade carried plowbeams.' y. i,

` 9. I'4 combination, a tractor including a main draw bar at therear'end thereof,L an auxiliary draw bar carriedby the main draw bar,oppositely disposed plow beams disposed beneath theftractor, andkpivotally 4 connected to saidlauxiliary draw bar atv their rear endsfor vertical movement relative thereto,-'inter` by eachjof saidchangeable mountings carrie'dfby said plow l beams, a plow blade carriedbyI each# of said mountings, and means for restraining saidplowbeams'against lateral and vertical .dis-l placement. 10. Incombination, a tractor including va main draw` bar at the rear endthereof, an auxiliary Adrawvbar carriedby the main draw bar, oppositelydisposed plow beams disposed beneath'the tractor and'pivotally connectedstrain the same from lateral and vertical disv placement.

11. In combination, a tractorincluding a main drawbar at the center ofthe rear end thereof, an auxiliary drawv bar supported Y. i. 111,5 tosaid auxiliary draw bar at their rear ends t transversely ofv said maindraw bar, and a pair of oppositely disposed soil conditioning unit-sdisposed beneath the body of said tractor and having theirrear endsadjustably pivoted to said auxiliary cross bar, one adjacent each sideof said main draw bar, said units exy draw bar.

tending forwardly and obliquely fromv their points of connection withksaid auxiliary I of oppositely arranged soil conditioning unitsdisposed'bene'ath the bodyv of said tractor and having their rearendspivotally connected to said auxiliary draw bar, said units extendingforwardlyfand obliquely outward from p their points 'of connection withsaid auxiliary draw bar, means pivotally connecting said units at pointsintermediate their respective lengths to an adjacent portion of thetractor body, means for raising and lowering the lforward end 'portionsof either'or both of said units from and to soil conditioning position,and meansfor "securing either or both of said units vin raised position.

13. In combination, a tractor including aV main rdraw vbar at'the centerof the rear end thereof, Van auxiliary draw bar'supported transverselyof 'said main draw bar, a pair of oppositely arranged soil conditioningunits disposed beneath the body of said tractor and having their rearends pivotally connected to said auxiliarly draw bar,` one adjacent toeachfside ofsaid main draw bar, said units extending forwardly andobliquely outward from their points' of connection with said auxiliarydraw bar,'means pivotally connecting said unit-s to an 'adjacent portionof the tractor body at similar points toward their forward ends,"means"V for raising and lowering the'forward end portions of either orboth of said units from and to soil conditioning position, and means forsecuring one or both of said units in raised position.

14.*In combination, avtractor including a main draw bar at the center ofthe rear end thereof, an auxiliary draw bar supported transversely ofsaid main vdraw bar, a pair `of oppositely karranged beams disposedbeneath the body of said tractor and having their rear ends'pivotallyVconnected to said auxiliarydraw bar one adjacent to each side of saidmain draw bar, said beams extending forwardly and obliquely outward fromtheir points yof connection with ysaid auxiliary draw bar, meanspivotally connecting said beams to an adjacent portion of the tractorbodytoward their forward ends, soil conditioning units carried by saidbeams, means for raising and lowering the forward end portions of eitheror both of said beams from and to the soil conditioning position of theelements thereon, 'and means for securing either or both of said beamsin raised position.

15. In combination, 'a tractor including a main draw bar at the centerof the rear end thereof, an auxiliary draw bar supported transversely ofsaid main draw bar, a pair of oppositely arranged beams disposed beneaththe body of said tractor and having their rear ends pivotally connectedto said auxiliary draw bar, one adjacent to each side of said main drawbar, said beams extending forwardly and kobliquely from their points ofconnection with said auxiliary draw bar, means pivotally connecting saidbeams to an adjacent portion of the tractor body toward their forwardends, soil conditioning elements carried 'at the outer sides of saidbeams, othersoil conditioning elements carried at the inner sides `ofsaid beams toward the forward ends thereof, means yfor raisingandlowering the forward ends of either or both of said beams "from andto the soil conditioning position of the elements thereon, and means forsecuring either or both of said beams inraised position. 4

16. In combination, a tractor including `a main draw bar at the'centerof the rear end thereof, an auxiliary draw `bar supported transverselyof said main draw bar, a pair of oppositely arranged beams disposedbeneath the body of said tractor and having their rear Iends pivotallyconnected to Vsaid auxiliary draw bar, one adjacent to each side ofsaidinain draw bar, said beams extending forwardly'and obliquely fromtheirpoints of connection with vsaid auxiliary draw bar, means pivotallyconnecting said beams to an adjacent portion of the tractor body towardtheir forward' ends, soil conditioning eleyments.carried atl the outersides of said beams,

other-soilconditioning elements carried at the innersides of said beamstoward the forward ends thereof, means for raising and lowering theforward ends of either or both of said beamsfrom and to the soilconditioning position oftheelements thereon, and sliding bolt meanscommon to both of said beams for securing either or both of them inraised position. a

17. In combination, a tractor including a main draw bar at the center ofthe rear end thereof, an auxiliary draw bar supported transversely ofsaid main draw bar, a pair of oppositely disposed 'beams arrangedbeneath thebody Aof said 'tractor and having their rear ends pivotallyconnected to said auxiliary draw bar, one adjacent to each side of saidmain draw bar, said beams extending forwardly and obliquely outward fromtheir points of connection with said auxiliary draw bar, means pivotallyconnecting said beams to an adjacent portion of the tractor body toward'their forward ends, soil conditioning elements carried at kthe outersides of said beams, other soil conditioning elements sai izo

iso

carried at the inner sides of said beams towardthe forward ends thereof,means for utilizing the power of the tractor for raising and loweringthe forward ends of either or both of said beams from and to the soilconditioning position of the elements theree on, and means for securingeither or both of said beams in raised position.

Signed at Jacksonville, inthe county of Duval and State of Florida thislst'day of 0 November, A. D. 1927.

LEVI o. HESTER.

